QUnit.test("creditcard", function (assert) {
    var method = methodTest("creditcard");
    assert.ok(method("4111-1111-1111-1111"), "Valid creditcard number");
    assert.ok(method("4111 1111 1111 1111"), "Valid creditcard number");
    assert.ok(!method("41111"), "Invalid creditcard number");
    assert.ok(!method("asdf"), "Invalid creditcard number");
});
